Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This question already has an answer here:

I have a UX31-E Asus Zenbook running 12.04 until today when I tried 12.10. I've experienced this issue on both versions of ubuntu.

I have tried turning the brightness down manually through the settings manager as well as trying to set it using my function keys. Either way works fine while I'm actively using the computer. After a reboot, my brightness is once again at maximum. Additionally, the dim screen to save battery feature has actually been turning my brightness up. Then when I begin using my computer again after it dims the brightness is at max.

share|improve this question

marked as duplicate by Eric Carvalho, Kevin Bowen, Basharat Sialvi, txwikinger, coteyr May 22 '13 at 12:45

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I have the same problem with Thinkpad X230 on 12.04 – Gerstmann Oct 26 '12 at 6:15… – user101021 Oct 26 '12 at 8:18

try PostInstallerF, it has a option for brightness control "control de brillo".

share|improve this answer

The first part of your problem, "After a reboot, my brightness is once again at maximum" has been addressed here. More specifically this solution worked for me.

share|improve this answer

Not the answer you're looking for? Browse other questions tagged or ask your own question.